<cn>
#### 高级搜索
三列栅格式的表单排列方式，常用于数据表格的高级搜索。
有部分定制的样式代码，由于输入标签长度不确定，需要根据具体情况自行调整。
</cn>

<us>
#### Advanced search
Three columns layout is often used for advanced searching of data table.
Because the width of label is not fixed, you may need to adjust it by customizing its style.
</us>

<template>
  <div id="components-form-demo-advanced-search">
    <a-form
      class="ant-advanced-search-form"
      :form="form"
      @submit="handleSearch"
    >
      <a-row :gutter="24">
        <a-col
          v-for="i in 10"
          :key="i"
          :span="8"
          :style="{ display: i < count ? 'block' : 'none' }"
        >
          <a-form-item :label="`Field ${i}`">
            <a-input
              v-decorator="[
                `field-${i}`,
                {
                  rules: [{
                    required: true,
                    message: 'Input something!',
                  }],
                }
              ]"
              placeholder="placeholder"
            />
          </a-form-item>
        </a-col>
      </a-row>
      <a-row>
        <a-col
          :span="24"
          :style="{ textAlign: 'right' }"
        >
          <a-button
            type="primary"
            html-type="submit"
          >
            Search
          </a-button>
          <a-button
            :style="{ marginLeft: '8px' }"
            @click="handleReset"
          >
            Clear
          </a-button>
          <a
            :style="{ marginLeft: '8px', fontSize: '12px' }"
            @click="toggle"
          >
            Collapse <a-icon :type="expand ? 'up' : 'down'" />
          </a>
        </a-col>
      </a-row>
    </a-form>
    <div class="search-result-list">
      Search Result List
    </div>
  </div>
</template>
<script>

export default {
  data () {
    return {
      expand: false,
      form: this.$form.createForm(this),
    };
  },
  computed: {
    count () {
      return this.expand ? 11 : 7;
    },
  },
  methods: {
    handleSearch  (e) {
      e.preventDefault();
      this.form.validateFields((error, values) => {
        console.log('error', error);
        console.log('Received values of form: ', values);
      });
    },

    handleReset () {
      this.form.resetFields();
    },

    toggle  () {
      this.expand = !this.expand;
    },
  },
};
</script>
<style>
.ant-advanced-search-form {
  padding: 24px;
  background: #fbfbfb;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
}

.ant-advanced-search-form .ant-form-item {
  display: flex;
}

.ant-advanced-search-form .ant-form-item-control-wrapper {
  flex: 1;
}

#components-form-demo-advanced-search .ant-form {
  max-width: none;
}
#components-form-demo-advanced-search .search-result-list {
  margin-top: 16px;
  border: 1px dashed #e9e9e9;
  border-radius: 6px;
  background-color: #fafafa;
  min-height: 200px;
  text-align: center;
  padding-top: 80px;
}
</style>




